Low-lying and other vulnerable countries calling for fast action on non-CO2 global warming pollutants

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Led by the tiny Pacific island of the Federated States of Micronesia, a growing group of low-lying islands and other vulnerable countries are calling for fast action on the approximately 50% of global warming that is caused by pollutants other than carbon dioxide (CO 2 ). Micronesia submitted a proposal last year to address these very climate warmers—black carbon, methane, and tropospheric ozone—under the UN climate treaty.

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US greenhouse gas emissions expected to grow until 2020

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Tags: Global warming Green cars Green credentials Latest news climate change greenhouse gas emissions HFCs increase in greenhouse gas emissions increase in HFCs Micronesia National Communication US climate change

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Study: Hydrofluorocarbons Will Contribute Significantly to Global Warming by 2050

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Global ozone-depleting substances (ODSs) and HFC emissions (A), global CO 2 and HFC emissions (B), and ODS, HFC, and CO 2 global RF (C) for the period 2000–2050. Their contribution to global warming is currently small, but can increase to the equivalent of 9-19% (CO 2 -eq. basis) of projected global CO 2 emissions in business-as-usual scenarios by 2050.

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Indo-US task force to study HFC phase-down

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The global warming potentials (GWP) of HFCs range from 140 (HFC-152a) to 11,700 (HFC-23), according to the US EPA. Last year, the Federated States of Micronesia along with other vulnerable island countries proposed an amendment to the ozone treaty to phase down the production and use of HFCs. India and the US have agreed to establish an Indo-US Technical Task Force on hydrofluorocarbons, or HFCs—super greenhouse gases.

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North American Countries Target “Super” Greenhouse Gases Through Strengthened Ozone Treaty

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The Federated States of Micronesia submitted a similar proposal on HFCs as well. HFC emissions controlled under the Kyoto Protocol would not be affected by either the North American or Micronesia proposal. The phase-down of HFCs under the Montreal Protocol is essential for achieving the science-based goal of more than 100 countries to reduce atmospheric concentrations of greenhouse gases to 350 ppm and limit temperature increases to a global average of 1.5 °C,

2010 162

New international Climate and Clean Air Coalition to focus on reduction of short-lived climate pollutants

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Global benefits from full implementation of measures for reduction of short-lived climate pollutants in 2030 compared to the reference scenario. US Secretary of State Hillary Clinton announced the Climate and Clean Air Coalition to Reduce Short-Lived Climate Pollutants, a new global initiative to seize the opportunity of realizing concrete benefits on climate, health, food and energy resulting from reducing short-lived climate pollutants.

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US Climate Action Report to UN Projects 4% Growth in Total US GHG Emissions to 2020

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The Climate Action Report also used EPA’s Applied Dynamic Analysis of the Global Economy (ADAGE) model and projected that total US greenhouse gas emissions will gradually increase by about 18% between 2010 and 2050. Micronesia, for one, is proposing the use of the Montreal Protocol treaty to phase out HFCs as the most important fast-action strategy for saving their island. If not aggressively phased out, HFCs could contribute up to one-third or more of total global warming.

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